Bug Identifier
Bird Mite
Community identification

Bird Mite

Ornithonyssus sylviarum

Order & Family
Mesostigmata: Macronyssidae
Size
0.5 to 1.0 mm (barely visible to the naked eye)
See this bug in the Encyclopedia

Natural Habitat

Primarily found in bird nests (sparrows, pigeons, starlings) and occasionally infesting homes through vents or windows once nests are abandoned.

Diet & Feeding

Obligate blood-feeders; they primarily feed on the blood of birds but will bite humans if their avian hosts are unavailable.

Behavior Patterns

They are highly active crawlers that aggregate in large numbers. While they cannot complete their life cycle on human blood, they can survive for several weeks and cause significant skin irritation.

Risks & Benefits

Risks include intense itching, dermatitis, and potential secondary infections from scratching. They are considered a nuisance pest in residential areas and do not provide any ecosystem benefits.